9-3 aero v6 2009 problem

Hi there im from mexico i have a problem with my saab, a days before i tried to open it but it didnt respond with the two controls even with the old school key i couldnt open my car fortunatly it was at my garage so i take a bike, next day i open the car normaly but at the night it start doing the same it didnt respond to the key so i open the door like a theft and the alarm activate i put my control on the console and the alarm quite and i start my car but in the board the lights start two flash i think it was all the lights engine, service, TCS, ABS, battery, etc so i stop and i check and one cable of the battery was ripped and very hot. so next day i change that cable and the batery and the car worked ok for a few days. now the same problem came but now the car cant start any more it is death, i check the cable and the batery and is ok.

someone here has the same problem?? please need help my saab is death olmost for a month.

sorry for my english

thanks
alex